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在 0 0 4mol/LH2 SO4 介质中 ,SiO2 -3 ,Sb(Ⅲ ) ,MoO2 -4 形成Si Sb Mo三元杂多酸 ;然后调节酸度至 0 2 2mol/LH2 SO4 ,加入罗丹明B生成 [Si Sb Mo杂多酸 ]·[罗丹明B]四元缔合物 ,该缔合物在 650nm处产生一灵敏的二级散射峰 据此建立了一个测定 4～ 4 0 μg/LSi的二级散射光谱分析新方法 ,用于钢样中硅的测定 ,结果满意
In 0 0 4mol / LH 2 SO 4 medium, SiO 3, Sb (Ⅲ) and MoO 2 -4 formed Si Sb Mo ternary heteropolyacid; then the acidity was adjusted to 0 2 2mol / LH 2 SO 4, rhodamine B was added to produce [Si Sb Mo heteropolyacid] · [Rhodamine B] quaternary complex, which produces a sensitive second-order scattering peak at 650 nm. Based on this, a secondary scattering measurement of 4 to 40 μg / New method of spectral analysis for the determination of silicon in steel samples with satisfactory results